Abstract: In the machining, usually the follow rest sleeve to support the workpiece is not very well when cut the workpiece such as the thin and long spline shaft.gear shaft and so on, and it is difficult to change the follow rest sleeve and the cost is increase, and it is vibrate when machining the thin and long shaft so that the accuracy is poor, efficiency is low, especially machining the thin and long shaft head and step shaft, the problem of support is very obviously, so it is very important to reseach and design a new type follow rest to slove above problem, because it is will influence the efficiency. stability and reliability of the quality.